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Patented Dec. 2 1930- MAIN, GERMANY, ASSIGNORS TO FARBWERKE VORM. MEISTER LUCIUS AN D BRUN- I G, or iIOCHST-ON-THE-MAIN, GERMAN Y, A CORPORATION 01' GERMANY DRESSING SEED 1T0 Drawing. Application filed October 8, 1925, Serial No. 61,352, and in Germany October 15, 1924. '7

Dry agents used for dressing seeds by dust-j ing contain fungicidal compounds of diflen ent kinds. In order to obtain a uniform treatment of the seeds with such a dry dressing agent, of which only a small quantity should be employed, it is necessary that the fungicidal compound be in an extremely finely powdered dust-like state. The dusting of the fungicidal compound involves a great annoyance for the farmer. The dry dressing "agent ordinarily is transported either in very primitive or not sufficiently,

' tight receptacles; moreover it is necessary in y emptying the receptacles to, fill the dressed seeds into a bag from which they are againdischargedinto the drilling barrow. These manipulations cause the. emission of a great deal of dust when using the hitherto employed dry dressing agents which may even be injurious to the health of the workman who handles them, because of the toxic properties of the fungicidal compounds which they contain.

TI'QSIII, 5 parts of Now we have found that the nuisance due to the dusting of the dry dressing agents can be obviated by adding a slight quantity of an oil.

We give hereafter some examples of mixtures which may be advantageously used for the p rpose in question:

(1) A mixture composed of: 30 parts of copper carbonate,'30 parts of sulfon'ate of phenylarsenie acid, 32 parts of kieselguhr. By adding to this mixture 3 parts of an oil, its properties are altered so much that, while remaining in such a finely divided state that thelseeds can be uniformlytreated therewith, it entirely erty of emitting dust.

(2) A mixture composed of: 14 parts of calomel, '7 parts of phenylarsenic oxide,

loses its propparts of a sulfonate of resin, 42 parts of an indifferent extender, for instance talc. By adding to this mixture 2 parts of spindle oil, the mixture is completely deprived of its propert of emitting dust.

(3) g mixture composed of: 20 parts of mercury chlorophenol, 30 parts of sodium hydroxide or sodium sulfate, 48 parts of talc. By adding to this mixture 2 parts of resin (4) A mixture composed'of: 14 parts of copper carbonate, 7 parts of calomel, 7 parts of phenylarsenlc acid, parts of a sulfonate of resin, 30

or talc. By adding to this mixture 2 parts of bone oil (Dippels oil) or train oil, the

mixture is deprived of its property of emittmg dust andthereby injuring the health of the workman who handles it.

parts of kieselguhr or china clay In the same way other mixtures may be mixed with an oil, whereby their property of emitting much dust is removed without reducing their eflicacy. Such a dry dressing agent which has been impregnated with an oil and consequently has lost its property of emitting dust, may be applied even without the aid of a dressing apparatus, by-spraying it over a heap of corn.

For instance 50 kg. of wheat seeds are sprayed over with 150 gr. of the dressing agent and when this heap of seeds is stirred in the same manner as is done by'the hitherto practised wetting method, the dressing agent is distributed all over the grains.

-We claim: i

1. A composition of matter comprising about 32 to 48 parts of an indifferent extender, about 30 to 40 partsof a sulfonate of resin and about 2 to 3 parts of an oily material, the remainder of. the composition HEINRICH RossNERi ADOLF STEINDORFFM KASPAR PFAFF.

CERTIFICATE or connncrlom Patent No. 1,783,200. Granted December 2, 1930, to HEINRICH aossnaa ET AL.

It is hereby certified that the above numbered patent was erroneously issued t0 "Farbwerke Vorm. Meister Lucius and Bruning, of Hochst-on-the-Main, Germany, a Corporation of Germany", whereassaid patent should have been issued .to I. G.

Farbenindustrie ,Aktiengesellschatt, of Frankfurt A. M., Germany, said corporation being assignee by mesne assignments of the entire interest in said invention, as

shown by the records of assignments in this office; and that the said Letters Patent should be read with thisaeorrection'therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 6th day of January; A. D. 1931.

v M. J. Moore, (Seal) a v 7 Acting Commissioner of Patents. 

